The Swivl was a device demonstrated to me at the Bett 2017 show by one of the Apple resellers who had a stand there.

It is basically a robot that holds an iPad or other tablet, and rotates to ‘follow’ a portable transmitter/microphone that can be worn around the neck of whoever is being recorded. So, for example, if you wanted to video record a student performing a practical task, they would wear the microphone dongle and the robot would follow their movement, with the iPad recording video via its camera and receiving audio from the mic worn by the student.

The demo I witnessed was very interesting and the setup certainly could be used to collect video evidence of practical skills being performed in a number of scenarios.